364 GLOSSARY 



Symbiont (Gr. sun, with, bios, life), one of two dissimilar organisms living 



together. 

 Symbiosis, Symbiotic, a living together of dissimilar organisms, with 



mutual benefit, also styled commensalism, consortism, individualism, 



and mutualism. 

 Symphioaepous, Symphycabpous (Gr. sumphuo, to grow together, carpos, 



fruit), with confluent apothecia. 

 Syngosimia (Gr. sun, with), gonimia imited in clumps. 



Tabtabeous, resembling tartar, having a more or less rough crumbling 



surface, or thickish, and almost smooth. 

 Terebbate (Lat. terebra, a borer), with scattered perforations. 

 Tebminal (Lat. temiiimrc, to limit), on the end of a stalk or branch. 

 Tebbicolous (Lat. terra, the earth, colo, to inhabit), living on soil. 

 Tessellate (Lat. tessella, a small square piece of stone), resembling a 



tessellated pavement. 

 Testaceous (Lat. testa, a brick or tUe), brick-red. 

 THAiAMiUM (Gr. thalamos, a bed-chamber), layer of tissue in the apo- 



theciimi, consisting of paraphyses and periphyses. 

 Thalune margin, an apothecial margin formed of and usually coloured 



like the thallus, cf. amphithecium. 

 THALLom EXCtPLE, thalloid margin of the apothecium. 

 THAiiUS (Gr. thallos, a sprout), vegetative part of the lichen-plant. 

 Theca (Gr. theke, a case), an enlarged cell containing spores, cf. ascus. 

 Thecipeeous (Gr. theJce, a case, Lat. fero, to carry), bearing the asci. 

 Thecium (Gr. theke, a case), the layer of tissue in the apothecium consisting 



of asci and paraphyses, cf. hymenium. 

 Thedoteemoid, having tubercular apothecia like those of the genus 



Thelotrema. 

 Thyesoed (Lat. thyrsus, the bacohic staff, Gr. eidos, like), with crowded, 



di(^otomous branching. 

 ToMEMTOSE (Lat. tomentum, a stuffing for cushions), densely covered with 



down-like hairs. 

 ToEULOSE (Lat. torus, muscle), cylindric, with swoUen portions at 



successive intervals. 

 Trabeculose (Lat. trahecula, a little beam), applied to reticulating 



fibrils. 

 Teichotomously (Gr. triche, in a three-fold manner, tome, a cutting), 



branching in a three-fold manner. 

 TbivtaTi (Lat. trivialis, common), the specific name. 

 Tbuncate (Lat.), ending abruptly, as if cut off. 

 Tdbebcle (Lat. tuber, a tumor), a small excrescence or wart — TuBEECU- 



LATE, TnBEECULOSE. 



TtTBTJUFOEM (Lat. tubulus, a small pipe), applied to a thallus of round 



pipe-like filaments. 

 Tumid (Lat.), inflated, swollen. 



Tdnioated (Lat. tunica, a garment), having a coat or covering. 

 TuBBDtATE (Lat. turbo, a whipping-top), shaped like a top. 

 TuBGiD (Lat. turgidus, inflated), swollen. 



Umbee, Umbeine (Lat.), the colour of umber, a dull-brown. 

 Umbiucate (Lat. umbiUcv^, the navel), navel-like, depressed in the 



centre. 

 UmbilicateIiY, applied to a thallus centrically a£Sxed to the matrix. 

 Umbo, Umbonate (Lat. umbo, any convex elevation), bearing an umbo in 



the centre. 

 Undulate (Lat. unda, a wave), with a wavy margin. 

 Unisebiate (Lat. unus, one, series, a succession), in one row. 

 Ubceolate (Lat. urceus, a pitcher), pitoher-Uke, hollow and contracted 



at the mouth. 



